EP3997782A1 - Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système - Google Patents

Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système

Info

Publication number
EP3997782A1
EP3997782A1 EP20735265.9A EP20735265A EP3997782A1 EP 3997782 A1 EP3997782 A1 EP 3997782A1 EP 20735265 A EP20735265 A EP 20735265A EP 3997782 A1 EP3997782 A1 EP 3997782A1
Authority
EP
European Patent Office
Prior art keywords
converter
intermediate circuit
energy store
time period
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20735265.9A
Other languages
German (de)
English (en)
Inventor
Patrick SCHMICH
Simon Zeller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP3997782A1 publication Critical patent/EP3997782A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/02—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac

Definitions

  • the invention relates to a system, in particular an energy supply system, for supplying an intermediate circuit and a method for operating a system.
  • Supply voltage can be present.
  • the invention is therefore based on the object of reducing interference.
  • the object is achieved in the system according to the features specified in claim 1 and in the method according to the features specified in claim 10.
  • the energy supply system for supplying an intermediate circuit, with a sensor for detecting a current in the intermediate circuit or a voltage on the intermediate circuit being connected to a controller which has a second converter,
  • a first energy store is connected to the intermediate circuit via the second converter, in particular wherein the intermediate circuit can be supported by a first energy store via the second converter, in particular a first energy store at the first connection of the second converter and the second connection of the second converter is connected to the intermediate circuit and / or the sensor, wherein the controller controls a third converter, in particular a DC / DC converter or current regulator, a second energy store being connected to the intermediate circuit via the third converter, in particular wherein the intermediate circuit can be supported by a second energy store via the third converter, in particular on the first Connection of the third converter is a second energy store and the second connection of the third converter is connected to the intermediate circuit and / or the sensor, the first and second energy stores being different, in particular having different dynamic behavior and / or different
  • the advantage here is that interference can be reduced. Disturbances from a first frequency range are reduced by a first energy store and disturbances from a different frequency range are reduced by a second energy store. Because the two energy stores are designed differently and thus when discharging
  • Each energy store is therefore suitable for compensating, that is to say in practical use only for reducing, periodic disturbances in different frequency ranges.
  • the controller controls a fourth converter, in particular a DC / DC converter or current controller, a second energy store being connected to the intermediate circuit via the fourth converter, in particular wherein the intermediate circuit can be supported by a third energy store via the fourth converter ,
  • a third energy store is connected to the first connection of the fourth converter and the second connection of the fourth converter is connected to the intermediate circuit and / or the sensor, the first, third and second energy stores being different, in particular having different dynamic behavior and / or different
  • Frequency range different energy storage can be provided.
  • the first energy store has an accumulator and the second energy store has an electrolytic capacitor or
  • Double layer capacitor The advantage here is that the accumulator supports direct components and low-frequency fluctuations in the current or voltage in the intermediate circuit.
  • the accumulator has a high capacity compared to the other two types.
  • the accumulator for example a lithium-ion accumulator, is too slow with regard to the dynamics during charging and discharging in order to regulate higher-frequency disturbances
  • the first energy store has an accumulator
  • the second energy store an electrolytic capacitor
  • Accumulator supports DC components and low-frequency fluctuations in the current or voltage in the intermediate circuit.
  • the accumulator has a high capacity compared to the other two types.
  • the accumulator for example a lithium-ion accumulator, is too slow with regard to the dynamics during charging and discharging in order to regulate higher-frequency disturbances
  • the double-layer capacitor in particular the Ultracap, has the highest dynamics, it is used to calm the highest frequency range.
  • the controller controls a first converter, in particular a DC / DC converter or current regulator, which is fed from a supply module which is connected to the first connection of the first converter, the second connection of the first converter being electrically connected to the intermediate circuit, in particular being connected to the intermediate circuit, in particular where the supply module has a mains-fed rectifier.
  • a first converter in particular a DC / DC converter or current regulator
  • the second connection of the first converter being electrically connected to the intermediate circuit, in particular being connected to the intermediate circuit, in particular where the supply module has a mains-fed rectifier.
  • the controller controls a fifth converter, in particular a DC / DC converter or current regulator, from which the third energy store can be charged.
  • a fifth converter in particular a DC / DC converter or current regulator
  • the controller controls a sixth converter, in particular a DC / DC converter or current regulator, from which the second energy store can be charged.
  • the controller controls a seventh converter, in particular a DC / DC converter or current regulator, from which the first energy store can be charged.
  • a seventh converter in particular a DC / DC converter or current regulator, from which the first energy store can be charged.
  • the advantage here is that when there are only such high-frequency disturbances that they can be compensated by the first energy store, it is nevertheless avoided that the first energy store is not completely emptied.
  • the fifth, sixth and / or seventh converter is or are fed from the supply module. The advantage here is that the rectifier of the
  • Supply module feeds the first and fifth, sixth and seventh converters.
  • a single mains-fed rectifier is therefore sufficient.
  • the controller is connected to a higher-level computer by means of a data bus, in particular for data exchange.
  • the advantage here is that the disturbances can be predicted and the dynamics of the respective converter or energy store can be adapted in good time. Because a higher-level controller specifies the movement sequences of mobile parts in a system.
  • recorded values is Fourier transformed, in particular an FFT is carried out, wherein in a second method step at least one maximum, in particular a local maximum, of the Fourier transformed curve is determined and a first compensation signal directed to the frequency is determined and fed to the intermediate circuit, in particular by means of the first converter, wherein in the first method step the course of the in a second time span,
  • recorded values is Fourier transformed, in particular an FFT is carried out, with at least one maximum, in particular a local maximum, of the Fourier-transformed profile recorded in the second time period being determined and a second compensation signal directed to the frequency being determined and fed to the intermediate circuit is, in particular by means of the second converter.
  • the advantage here is that the Fourier transformation can be carried out in a simple manner by means of an FFT.
  • the determination of the frequency associated with the maximum can also be carried out in a simple manner, and thus the compensation signal for this frequency can be determined easily and without any special computing effort.
  • the first time span is longer than the second time span, the first time span overlapping with the second time span.
  • the compensation signals of the different frequency ranges can be determined independently of one another.
  • the compensation signals determined for short periods of time are updated more quickly than those determined for longer periods of time.
  • the course of the values recorded in a third time period, in particular cycle time is Fourier transformed, in particular an FFT is carried out, with at least one maximum, in particular a local maximum, of the course recorded in the third time period being determined Fourier transformed course and a third compensation signal directed to the frequency is determined and fed to the intermediate circuit, in particular by means of the third converter, in particular wherein the third time period is shorter than the second time period.
  • the advantage here is that the energy stores working in different frequency ranges complement one another. It is also important that the compensation signal supplied to the intermediate circuit by the respective energy storage device in turn changes the recorded values, since the sensor determines the voltage applied to the intermediate circuit or the voltage im
  • the respective compensation signal is below
  • the method steps are repeated over time with a respective time span which is selected such that the previously determined maximum is a minimum frequency distance from the lower and upper
  • Has cutoff frequency The advantage here is that the cycle time can be adapted and thus an adaptively learning system can be provided. In addition, the signal-to-noise ratio can be improved if the minimum frequency spacing is observed.
  • FIG. 1 A system according to the invention for providing and supporting an intermediate circuit is shown schematically in FIG.
  • the system has a mains-fed supply module 8 which feeds a first connection of a converter 1, in particular a bidirectional DC / DC converter or current converter, the second connection of the converter 1 being a
  • the intermediate circuit not only has line inductances, but also has
  • Buffer capacities which are not shown in the figure. Such inductances and capacitances, which are arranged distributed in the intermediate circuit, lead to the formation of resonance frequencies which can be excited by the consumers during operation.
  • the system according to the invention is intended to suppress the excitation.
  • the intermediate circuit has an upper potential UZ + and a lower potential UZ-.
  • the supply module 8 is preferably a public one
  • AC voltage supply network in particular with a three-phase voltage.
  • the supply module 8 preferably has a rectifier on whose
  • the DC voltage side connection is arranged a capacitance for smoothing.
  • the first connection of the converter 1 is supplied from this direct voltage.
  • a series circuit formed from a resistor and a controllable semiconductor switch is connected in parallel with the first converter 1. If the voltage at the capacitance exceeds a threshold value, the controllable semiconductor switch is closed and energy is converted into heat via the resistor.
  • the converter 1 is controlled by a controller 10 in such a way that the actual value of the voltage (UZ + - UZ-) of the intermediate circuit detected by a sensor 9 is regulated to a setpoint value.
  • the first converter 1 has a dynamic behavior with a first time constant.
  • a second converter 2 also controlled by the controller 10, is connected with its first connection to a first energy store 11 and with its second connection to the intermediate circuit, the dynamic behavior of this energy store 11 together with the converter 2 having a second time constant, in particular which is smaller than the first time constant.
  • the first energy store is, for example, a
  • Battery arrangement such as lithium-ion battery, can be used.
  • a third converter 3, likewise controlled by the controller 10, is connected with its first connection to a second energy store 12 and with its second
  • this energy store 12 Connection to the intermediate circuit, the dynamic behavior of this energy store 12 together with the third converter 3 having a third time constant, in particular which is smaller than the second time constant.
  • a conventional capacitor arrangement such as electrolytic capacitors, can be used as the second energy store, for example.
  • a fourth converter 4 also controlled by the controller 10, is connected with its first connection to a third energy store 13 and with its second connection to the intermediate circuit, the dynamic behavior of this energy store 13 together with the fourth converter 3 having a fourth time constant, in particular which is smaller than the third time constant.
  • a conventional double-layer capacitor arrangement such as an ultracap arrangement, for example, can be used as the third energy store.
  • the various energy stores (11, 12, 13) thus have different time constants when supporting the intermediate circuit.
  • the third energy store 13 is provided for higher-frequency supports, that is to say for reducing high-frequency, in particular periodic or quasi-periodic, disturbances.
  • the other two energy stores (11, 12) are intended for lower-frequency interference.
  • Each of the energy stores (11, 12, 13) is preferably used to compensate for a frequency range assigned to the respective energy store (11, 12, 13). Preferably do not overlap the frequency ranges assigned to the respective energy store (11, 12, 13).
  • the controller 10 generates a control signal for each of the converters (1, 2, 3, 4) so that the converter sets the voltage determined by the controller and thus supplies it to the intermediate circuit.
  • the first converter 1 is controlled in such a way that power is supplied to the intermediate circuit from the first converter 1 when the voltage falls below a first threshold value.
  • a second threshold which is higher than the first
  • the controllable semiconductor switch of the supply module 8 is closed and thus power is dissipated from the intermediate circuit to the environment as heat.
  • a desired range of nominal voltage is thus achieved when there are no interference sources that have a higher frequency than the first time constant of the first converter 1.
  • the second converter 2 is used to reduce periodic or quasi-periodic disturbances which lie in a first frequency band. For this purpose, the recorded
  • Phase shift by 180 ° determines a compensation signal which compensates for the signal component periodic with the frequency associated with the respective maximum, i.e. makes it disappear.
  • the computing effort for determining the compensation signal is low in the case of discretely sampled signals. Only the zero crossing of the signal component periodic with the frequency belonging to the respective maximum has to be determined and that
  • Compensation signal can be determined directly with the same zero crossing but the inverted amplitude.
  • the FFT is executed in a first time interval.
  • the switching pattern determined as a control signal for one or more controllable semiconductor switches of the second converter 2 is output from the controller 10 to the second converter and the compensation signal is thus introduced into the intermediate circuit.
  • the third converter 3 is used to reduce periodic or quasi-periodic disturbances which lie in a second frequency band. For this purpose, the recorded
  • the first time span in particular the cycle, is shorter than the first time span of the second converter 2.
  • the signal transformed in this way is examined for maxima and / or peak values. Local maxima, which clearly protrude from the noise, are used as the basis for determining a compensation signal. For every given maximum, becomes through
  • Compensation signal determines which compensates the periodic signal component associated with the respective maximum frequency, i.e. makes it disappear.
  • the compensation signal has a much higher frequency than the compensation signal calculated for the second converter 2.
  • the computational effort for determining the second compensation signal is low in the case of discretely sampled signals. Only the zero crossing of the signal component periodic with the frequency belonging to the respective maximum has to be determined and that
  • Compensation signal can be determined directly with the same zero crossing but the inverted amplitude.
  • the FFT is executed in a first time interval.
  • the switching pattern determined as a control signal for one or more controllable semiconductor switches of the third converter 3 is issued by the controller 10 to the third converter and the compensation signal is thus introduced into the intermediate circuit.
  • the second frequency band preferably does not overlap with the first frequency band.
  • the fourth converter 4 is used to reduce periodic or quasi-periodic disturbances which lie in a third frequency band. For this purpose, the recorded
  • the first time span in particular the cycle, is shorter than the first time span of the third converter 3.
  • the signal transformed in this way is examined for maxima and / or peak values. Local maxima, which clearly protrude from the noise, are used as the basis for determining a third compensation signal. For each specific maximum, a third one is created by reverse transformation and phase shift by 180 °
  • Compensation signal determines which compensates the periodic signal component associated with the respective maximum frequency, i.e. makes it disappear.
  • the third compensation signal has a much higher frequency than the, in particular, third compensation signal calculated for the second converter 2.
  • the computational effort for determining the third compensation signal is low in the case of discretely sampled signals. Only the zero crossing of the signal component periodic with the frequency associated with the respective maximum needs to be determined and the third compensation signal can be determined directly with the same zero crossing but the inverted amplitude.
  • the FFT is executed in a first time interval.
  • the switching pattern determined as the control signal for one or more controllable semiconductor switches of the fourth converter 4 is issued by the controller 10 to the fourth converter and the fourth compensation signal is thus introduced into the intermediate circuit.
  • the third frequency band preferably does not overlap with the second frequency band.
  • the zero crossing i.e. the phase
  • the dead times for the first, second and third compensation signals are of different sizes.
  • the converters (2, 3, 4) are bidirectional. However, if, for example, the intermediate circuit has essentially only a single high-frequency disturbance, the energy store 13 can be emptied.
  • the supply module 8 provides a further DC voltage which, via a respective converter (7, 6, 5), provides a charging voltage or a charging current to a respective energy store (11, 12, 13) and thus a complete emptying is prevented.
  • the DC voltage is preferably made available via a further intermediate circuit.
  • the converters (7, 6, 5) are also activated from the controller 10.
  • the converters (7, 6, 5) are preferably each designed as bidirectional DC / DC controllers or current controllers.
  • the first DC voltage-side connection of the converter 7 is fed from a T-node of the further intermediate circuit and is connected to it. With its other connection, the converter 7 provides the energy store 11 and / or a charging circuit of the
  • Energy store 11 has a charging voltage for charging the energy store.
  • the first DC voltage-side connection of the converter 6 is fed from a T-node of the further intermediate circuit and connected to it. With his other connection the converter 6 provides the energy store 12 and / or a charging circuit of the energy store 12 with a charging voltage for charging the energy store.
  • the first DC voltage-side connection of the converter 5 is fed from a T-node of the further intermediate circuit and is connected to this. With its other connection, the converter 5 provides the energy store 13 and / or a charging circuit of the
  • Energy store 13 has a charging voltage for charging the energy store available.
  • the controller is connected to one or more other computers for data exchange by means of a data bus 14, in particular an Ethernet bus.
  • the respective first time span in particular the cycle time, is adapted if a maximum or one of the maxima is arranged, in particular closer, near the edge of the respective frequency band, i.e. near the upper limit frequency of the determinable Fourier spectrum, after executing the FFT as a minimum frequency distance from the edge of the frequency band.
  • the Fourier spectrum is finite, i.e. it has a lower and an upper limit frequency.
  • the frequency range between the lower and the upper limit frequency is referred to here as the frequency band.
  • I converter in particular bidirectionally operating DC / DC controller or current controller 2 converter, in particular bidirectionally operating DC / DC controller or current controller

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un système pour alimenter un circuit intermédiaire, et un procédé pour faire fonctionner un système. Un capteur de détection d'un courant dans le circuit intermédiaire ou d'une tension sur le circuit intermédiaire est relié à une commande qui pilote un deuxième convertisseur (2), en particulier un convertisseur CC/CC ou un régulateur de courant. Un premier accumulateur d'énergie est relié au circuit intermédiaire par l'intermédiaire du deuxième convertisseur (2). La commande pilote un troisième convertisseur (3), en particulier un convertisseur CC/CC ou un régulateur de courant. Un deuxième accumulateur d'énergie est relié au circuit intermédiaire par l'intermédiaire du troisième convertisseur (3). Le premier et le deuxième accumulateur d'énergie (11, 12) sont différents, en particulier présentent un comportement dynamique différent et/ou des constantes de temps de décharge différentes.
EP20735265.9A 2019-07-10 2020-06-17 Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système Pending EP3997782A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019004756 2019-07-10
PCT/EP2020/025289 WO2021004655A1 (fr) 2019-07-10 2020-06-17 Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système

Publications (1)

Publication Number Publication Date
EP3997782A1 true EP3997782A1 (fr) 2022-05-18

Family

ID=71401702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20735265.9A Pending EP3997782A1 (fr) 2019-07-10 2020-06-17 Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système

Country Status (4)

Country Link
US (1) US11658560B2 (fr)
EP (1) EP3997782A1 (fr)
DE (1) DE102020003607A1 (fr)
WO (1) WO2021004655A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE511552C2 (sv) * 1998-02-18 1999-10-18 Abb Ab Styrutrustning för aktiva filter och förfarande för reduktion av övertoner i en bipolär likströmslänk
EP2614576B1 (fr) * 2010-09-10 2018-10-10 Sew-Eurodrive GmbH & Co. KG Système local de distribution d'énergie comportant un circuit intermédiaire
JP5961949B2 (ja) * 2011-01-18 2016-08-03 ダイキン工業株式会社 電力変換装置
DE102011055134A1 (de) 2011-05-02 2012-11-08 Still Gmbh Verfahren zur Regelung eines Gleichspannungswandlers zum Anschluss eines elektrischen Energiespeichers
EP2654160B1 (fr) * 2012-04-18 2016-07-13 Siemens Aktiengesellschaft Procédé et circuit destinés à la stabilisation d'une tension électrique dans un circuit intermédiaire
JP5941376B2 (ja) * 2012-08-29 2016-06-29 京セラ株式会社 発電制御装置及び電力供給システム
US9878635B1 (en) 2013-02-13 2018-01-30 University Of Maryland Powertrain system in plug-in electric vehicles
WO2017066985A1 (fr) 2015-10-23 2017-04-27 The University Of Hong Kong Sucette d'ondulation prête à l'emploi pour liaisons à tension continue dans des systèmes d'électronique de puissance et des réseaux électriques à courant continu
US10680508B2 (en) * 2017-02-06 2020-06-09 University Of Florida Research Foundation, Incorporated Control to output dynamic response and extend modulation index range with hybrid selective harmonic current mitigation-PWM and phase-shift PWM for four-quadrant cascaded H-bridge converters
WO2019006362A1 (fr) 2017-06-30 2019-01-03 Baxter International Inc. Systèmes et procédés de filtrage de bruit et d'analyse de signaux de forme d'onde veineuse

Also Published As

Publication number Publication date
WO2021004655A1 (fr) 2021-01-14
US11658560B2 (en) 2023-05-23
US20220286037A1 (en) 2022-09-08
DE102020003607A1 (de) 2021-01-14

Similar Documents

Publication Publication Date Title
EP1842283B1 (fr) Procede et dispostif pour l'operation d'un circuit convertisseur avec un filtre lcl
EP2611643A2 (fr) Système d'alimentation en énergie électrique destiné à des dispositifs d'entraînement de véhicules ferroviaires
EP1842281A1 (fr) Procede et dispositif pour actionner un circuit convertisseur comportant un filtre lcl
EP0571642B1 (fr) Procédé et dispositif d'obtention d'un signal de synchronisation pour un étage de commande d'une soupape commandée d'un compensateur série commandé
EP2340595B1 (fr) Dispositif et procédé pour la compensation de la puissance réactive d'un transformateur d'essai
EP3329575B1 (fr) Procédé et dispositif pour opérer un système électrique, système électrique
EP2740203A2 (fr) Dispositif d'alimentation électrique avec correction de facteur de puissance et signal de forme du courant et procédé pour l'opération
WO2011157488A2 (fr) Procédé d'équilibrage de tension réseau
DE102013106425A1 (de) Schaltnetzteilvorrichtung und Verwendung einer solchen
DE102011078452A1 (de) Verfahren zum Ansteuern eines Wechselrichters eines Elektrowerkzeuges und Elektrowerkzeug
DE112019002444T5 (de) Energie-umwandlungseinrichtung und energie-umwandlungssystem
EP2945245B1 (fr) Procédé et dispositif de réduction de fluctuations de tension dans un réseau d'alimentation
EP3997782A1 (fr) Système d'alimentation en énergie pour alimenter un circuit intermédiaire et procédé pour faire fonctionner ledit système
DE19605419B4 (de) Verfahren zur Beseitigung von Abweichungen der Ist-Spannung in einem Drehstromnetz von einer vorgegebenen Soll-Spannung
EP3763026A1 (fr) Procédé pour faire fonctionner un système d'entraînement électrique comprenant un accumulateur d'énergie et système d'entraînement pour l'exécution d'un tel procédé
EP3236568A1 (fr) Procede destine au fonctionnement d'un onduleur et onduleur fonctionnant selon ce procede
EP3696929A1 (fr) Réseau d'alimentation en énergie
DE102011086988B3 (de) Verfahren zum Betrieb einer Windturbine
EP3799282A1 (fr) Convertisseur de courant à amortissement actif de la tension d'un circuit intermédiaire
EP3830937A1 (fr) Procédé destiné à surveiller un filtre coupe-bande d'un système de convertisseur
EP4070444B1 (fr) Procédé de fonctionnement d'un onduleur et onduleur permettant de mettre en oeuvre ledit procédé
EP0330055B1 (fr) Procédé de division symétrique d'une tension continue qui est en série avec un diviseur de tension à n condensateurs et dispositif de mise en oeuvre du procédé
DE19942203B4 (de) Verfahren zur Ausgangsspannungsbegrenzung für einen spannungs-/frequenzgeführten Umrichter
EP0727859B1 (fr) Méthode pour améliorer la qualité de la tension dans un réseau de courant alternatif et dispositif pour la mise en oeuvre du procédé
DE4308686C2 (de) Schaltungsanordnung zum Ausgleich von Wirk- und Blindleistung zwischen einem niederfrequenten Wechselspannungsnetz und einem Gleichspannungsnetz

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220210

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230531